Wall-vibrating machine



Ot. f1, 1927. 1,644,175

E, D. CHURCH WALL VIBRATING MACHINE Filed Jan. 1L 1924 @W @A WA 'raisers oe., s, rees,

EDGAR D. CHURCH, OF EGDW, MICHIGAN, .SSIGNOB I0 JAOKSON t CHURCH 0F MGETAW, EXCHIGAN, A CQBEGBATION 0F EICHIGAN.

'WALL-YEMEN@ MACHINE.

This invention relates to machines for vibrating the side walls of stcrege hoppers from which material such as sand or lime is to be 'fed out gradually. In a previous s Patent, No. 1,460,573, l have 'illustrated such a hopperl arranged to feed an automatic measuring device. I

Myiresent improvement relates to an ini'- proveA construction and nicde o operation l@ or motor-actuated rapping device especially well adapted to service such as described in the patent above referred to The invention embodies a rapping ncachne of simple construction, not likely to get out or order under the conditions of hard usage to which machines or this type are usually subjected, including the presence in the air oi' quantities of dust and grit which have heretofore made the use o cer-- 2@ tain types or electrically actuated rapping devices impracticable.

With that object in view l employ a striking hammer mounted onthe end ci a leef or whip spring, 'the fixed end ci the spring being secured rigidly to a wall of the hopper, and. l mount on the wall of `the hopper underneath the hammer a removable anvil which receives the impacts ci the hammer when the spring is dexed and released.

l also monnt on Athe hopper wall a springnctnating motor-having a cranl: and wiping roller that raises and releases the hammer against the resistance or the spring. By this arrangement l eliminate all sensitive or delicate parts and mechanisms and provide a rapping device that not only delivers a. series o quickly repeated Aorcible hammer blowsvagainst the side wail or" the hopper, but also sets up additional vibrations in the hop er wall. By reason ci the fact that the idemle spring is rigidly xed at one end to the wall, the wall is thereby subjected to two Ends o jars or vibrations; one caused by the intermittent bending and releasing 'or the spring and the consequent bending 'and shaking action on the wall of the hopper at 'the xed end of the spring. The other set of vibrations is caused by the impact of the hammer against the anvil. In addition, the side wall of the hopper is shaken by .the jarring of the motor, since each revolution o the motor shaft causes ,a

em'ng of the spring followed by its sudden release and the consequent reaction or- Ashaking of the motor is transmitted'v from se the motor to the well of the hopper. c.

My invention further includes certain de tails or' construction of the anvil and. o the hammer whereby the working;` ed these. f parts is prolonged end renewals oi the worn o@ parte is facilitated.

Vith the foregoing and certain other objects in view which will appear later in the speciication, my invention comprises the cle-l vices described and claimed and the equiva'- 65 lents thereof.

Fig. l is a side view or the device attached to the wall o a hopper.,

Fig. 2 is a similar view with the hammerguiding bracket broken a ev and the raised position of the rapping' vitamin-er indicated by dotted lines.

Fig. 3 is a plan View ci" the parts shown in Fig. 2.

Fig. e is a detail, partly broken away, of the hammer head.

Fig. c is a perspective View of the part-s comprising the removable anvil member.

ln the drawings, l is the' hopper wall, usually inclined, as shown in Fig, l.

The rapping machine is carried by the wall l and consists essentially in'a multiple leaf spring il lined at one end to an outwardly projecting boss or lue 3 secured to the wall l.

The free end of spring 2 carries a harnzner head 4 preierebly oi cast steel or other suitable material.

The head 4 has a base ange 5 adapted .to be bolted to the spring 2, and a wearing plate 6 is secured to the other face of the dan e and projects beyond the edge thereof, as s own in Fig. d.

To reise the hammer against the resistance of the spring 2, l provide a wiper or roller 7, on the end of a revclvable crank 8. The crank is mounted on shaft 9 ci a motor l() which may be equipped with a speed reducingrr gear in the motor casing, as is common.

The motor is preferably mounted on a breelret 11 xed to hopper wall l.

An anvil is also lined to the hopper wall between the motor support and the lug 3 to receive the impacts of the hammer head and effect the desired vibrations of the wall l. Y Preferably the anvil consists of the three assembled arts shown in Fig. `5, where 12 is the anvil face plate, 13 is a bese plate formed with elongated-'slots' 13 wide enough to receive the heads of bolts 15. Plate' 14' has correspondin openings 14" also enough at one en to ermit the heads -bolts to pass throug but with. narrower communicating slot-s, as shown. When L plates 13`and 14 are riveted together and to the hopper wall 1' they comprise a recessed. base into which a bolt 15 can be removably Y secured by passing its head throu h opening 14'* and then moving the bolt lsi ewise 'into the narrower part of the slot. Plate A12 is then removably secured upon the projecting bolts 15. The plate 12 is preferably made o hardened tool steel, and can be' removed when worn, and reversed or turned over to present a new wearing surface.

'llhe hammer head-4: has a' wearing plate 6, which is preferably made of tool steel and is formed with beveled edges, as shown in Fig. 4, so it can be turned around to present a new edge when the first edge becomes worn by roller 7. Y v

` The free end .of spring 2 and thehammer head 4f' are kept in line `with anvil late 12 by a U-shaped guide 16, secured by olts 15. In operation the roller 7 of-crank 8, dri'ven by motor 10, raises the hammer as shown by the dotted lilies in Fig. 2.' The bending of spring 2 causes a Vbending tendency in the late 1 of the hopper wall, because of the 'ending stressesy transmitted to the plate'by lug 3 at one place on the hopper wall and by motor bracketll ata distant place on the same wall, as shown in Fig. 1. l A

Upon release of the spring when roller 7 runs off the edge of wearing'-plate 6, this stress in wall l is relieved, causing vibration "of the wall. ediately the* her d wenn@ v hopper wall `1.' The hammer head rebounds from-the anvil and this blow is, therefore, a l

sudden and violent one that produces maximum vibration of the wall 1 with a minimum of force exferted.

By ,themeans above described I have produced a rapping machine especially well adapted fonlagitating the walls of hoppers. All the arts are easily accessible for re- -newal and -thatis readily .obtainable in the market. and fdoes not require special knowledge on the 'part o ftheeoperator tokeep it in repair.

l Having 'thus described my invention, what I claimanddeeire to secure by Letters Patent is: .1."lfn azliopper having-a. vibratory plate comprisinfg-4-one of the-WallsV of said hopper, a whip-spring, an anvil, and a motor for repair and the motor is an article actuatlng said whip-spring, all independ- Y ently mounted in ixed operative relation on said vibrating. plate, whereby adjacent parts of the middle areaso said plate are slightly beni'l and buckled and vibrat'ed with respect to each other by each co-operative reaction,

of said whip-spring, anvil and motor.

2. ln a hoppenhaving a vibratory plate,

a whip-spring, an anvil, a motor bracket and a motor thereon, said motor having a spring-v actuated crank, said spring, anvil and motor independently mounted on Said .vibratory plate in fixed-operative relation vto each other,

whereby "bending,f bckling andl shaking forces are exerted u on thediierent areas o the saine lplante' by't e vco-operative reactions of said spring, anvil and: motor.

In testimony whereof, l x my signature.

` grinsen' nommen 

